US3385514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant vapor compressor
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1966-04-11
•
Granted: 1968-05-28
•
Expires: 1986-04-11
Abstract
No abstract record available.
Inventors
- 👤 Charles R Kilgore
- 👤 Jr William P Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:35
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/02; F25B31/026; Y; Y10; Y10S; Y10S418/00; Y10S418/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A COMPRESSDOR COMPRISING MEANS FORMING A PUMPING BORE, A ROTARY FLUID DISPLACEMENT MEANS ECCENTRICALLY OFFSET IN SAID BORE TO FORM THEREWITH A CRESCENT-SHAPED WORKING CHAMBER AND HAVING CIRCUMFERENTIALLY SPACED PUMPING MEMBERS MOUNTED FOR ROTATION ON A SHAFT AND MOVABLE IN FOLLOWING THE BORE CONTOUR TO DEVELOP A PUMPING ACTION IN SAID CHAMBER, INLET MEANS COMMUNICATING WITH ONE SIDE OF SAID CHAMBER, AND OUTLET MEANS COMPRISING A ROW OF CIRCUMFERENTIALLY SPACED OPENINGS FORMING PORTS EXTENDING OUTWARDLY FROM SAID WORKING CHAMBER, AND PLURAL VALVE MEANS CORRESPONDING IN NUMBER TO SAID OPENINGS, SAID PLURAL MEANS BEING AXIALLY DISPOSED WITH RESPECT TO SAID SHAFT AND BEING EXPOSED SEQUENTIALLY TO WORKING CHAMBER OUTLET PRESSURE FOR OPENING SAID PORTS IN UNISON AND CLOSING SAID PORTS SEPARATELY DURING ROTARY OPERATION OF THE COMPRESSOR.
Claim 2
Dependent Claim
126 words
A COMPRESSDOR COMPRISING MEANS FORMING A PUMPING BORE, A ROTARY FLUID DISPLACEMENT MEANS ECCENTRICALLY OFFSET IN SAID BORE TO FORM THEREWITH A CRESCENT-SHAPED WORKING CHAMBER AND HAVING CIRCUMFERENTIALLY SPACED PUMPING MEMBERS MOUNTED FOR ROTATION ON A SHAFT AND MOVABLE IN FOLLOWING THE BORE CONTOUR TO DEVELOP A PUMPING ACTION IN SAID CHAMBER, INLET MEANS COMMUNICATING WITH ONE SIDE OF SAID CHAMBER, AND OUTLET MEANS COMPRISING A ROW OF CIRCUMFERENTIALLY SPACED OPENINGS FORMING PORTS EXTENDING OUTWARDLY FROM SAID WORKING CHAMBER, AND PLURAL VALVE MEANS CORRESPONDING IN NUMBER TO SAID OPENINGS, SAID PLURAL MEANS BEING AXIALLY DISPOSED WITH RESPECT TO SAID SHAFT AND BEING EXPOSED SEQUENTIALLY TO WORKING CHAMBER OUTLET PRESSURE FOR OPENING SAID PORTS IN UNISON AND CLOSING SAID PORTS SEPARATELY DURING ROTARY OPERATION OF THE COMPRESSOR.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |